US Bridges

IH 20 WB Off Ramp over SH 310

Fair

Dallas County, Texas · 3.4 MI E of SH 342 · Structure no. 180570237403305

Built
1973
52 years old, rebuilt 2019
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
203 ft
3 main spans
Daily traffic
6,017
2019 count
Owner
State
State Highway Agency

About this bridge

IH 20 WB Off Ramp over SH 310 is a steel continuous stringer/multi-beam or girder carrying IH 20 WB Off Ramp over SH 310 in Dallas County, Texas. It was built in 1973 and reconstructed in 2019, so it is 52 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 6,017 vehicles a day, projected to reach 8,424 by 2040. The structure is 203 ft (61.9 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIH 20 WB Off Ramp
CrossesSH 310
Location3.4 MI E of SH 342
RouteInterstate 20
CountyDallas County
StateTexas
Coordinates32.66411, -96.72274
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length203 ft (61.9 m)
Longest span99 ft (30.2 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,017 (2019)
Projected traffic8,424 by 2040
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 20 WB Off Ramp over SH 310 built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2019.

What condition is IH 20 WB Off Ramp over SH 310 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2023.

How much traffic does IH 20 WB Off Ramp over SH 310 carry?

About 6,017 vehicles per day (2019 count).

How long is IH 20 WB Off Ramp over SH 310?

The structure is 203 ft (61.9 m) long with a longest span of 99 ft (30.2 m) and a deck 26 ft wide.

Who owns IH 20 WB Off Ramp over SH 310?

It is owned by the State Highway Agency.